DefaultEngine.ini Steam options

Hi, i am trying to make an online game with a friend, and while we were setting up the steam session system we were wandering if there is a way or a list where we can find all the steam options that you can put into the defaultengine.ini file. After some googling we found this guide(Enabling UE4's Steam Integration) which covers a lot of different steam commands but we wanted to know more about them and what they do.

bump I am looking for the same info